Ophthalmic mounting.



G. H. DAY.

OPHTHALMIC MOUNTING.

APPLICATION FILED MAR. 2. 1916.

Patented May 9, 1916.

WITNESSES:

UNITED STATES PATENT OFFICE.

GEORGE H. DAY, OF SOUTHBRIDGE, MASSACHUSETTS, ASSIGNOR TO AMERICAN OPTICAL COMPANY, OF SOUTHBRI'DGE, MASSACHUSETTS, A VOLUNTARY ASSOCIATION OF MASSACHUSETTS.

OPHTHALMIC MOUNTING.

Specification of Letters Patent.

Patented May 9, 1916.

To all whom it ma concern:

Be it known t at I, GEORGE H. DAY, a citizen of the United States, residing at Southbridge, in the county of Worcester and State of Massachusetts, have invented certain new and useful Improvements in Ophthalmic Mountings, of which the following is a specification.

This invention relates to improvements in ophthalmic mountings and has particular reference to an improved construction of combined frame and bridge members by which the unitin of the parts of a s ectacle or eyeglass may e readily facilitate A further object of the invention is the provision of an improved center for an ophthalmic mounting and of novel and improved means for uniting the free ends of the lens inclosing frame and said center.

A further object of the invention is the provision of improved means for dispensing with the usual auxiliary end piece for uniting the ends of the frame, and substituting therefor an improved joint which shall both unite the ends of the frame and permit of attachment of the frame connecting member or nose bearing member or both thereto.

Other objects and advantages of my improved construction should be readily asparent by reference to the following speci cation taken in connection with the accompanying drawings forming a part thereof, and it will be understood that I may any modifications in the specific details of construction shown and described within the scope of the appended claims without departing from or exceeding the spirit of my invention.

Figure I represents a front elevation illustrating one form of my invention. Fig. II represents a fragmentary view thereof. Fig. III represents a sectional view on the line IIIIII of Fig. I. Fig. IV represents a perspective view of the several arts illustrated in Fig. I in disassemble relation. Fig. V represents a fragmentary perspective view illustrating a modified construction of center and attaching member carried thereby. Fig. VI represents a sectional view on the line VI-VI of Fig. I. Fig. VII represents a similar view of a modified construction. Fig. VIII represents a similar view of another modified construction. Fig. IX represents a similar view, parts broken away to illustrate the method of attachment. Fig. X represents a view similar to Fig. IX of another slight modification. Fig. XI represents a sectional view similar to Fig. III but of different form of construction. Fig. XII represents a horizontal sectional view.

In the drawings, in which similar characters of reference are employed to denote corresponding parts throughout the several views, the numeral 1 designates the center of the mounting, comprising a piece of flattened or oval material having the center thereof disposed in a vertical plane parallel with the plane of the glasses having at each end a downwardly extendin portion with its plane at right angles to t e lane of the lenses, said downwardly extending portion havin extendin upwardly and forwardly there rom an L-s a ed strip of material terminating in a per orated ear 2 adapted to fit a ainst the rim 4 which serves to inclose the 'enses 9.

It is to be noted that in the majority of the views I have shown the frame 4 as provided with the flattened and consequently widened portion 3 adapted to be engaged by the portion 2 of the bridge or lens connecting member, and also if desired by the reinforcing strip or tie plate 8 to increase the strength of the joint. It is to be understood, however, that as illustrated in Fig. XII for example, in the case of a rim of rather thick and heavy material, in place of increasing the width as at 3, it is merely necessary to form the cross apertures therethrough, if desired cutting away a portion of the material at the sides of the frame, or slightly reducing the same to provide spaces to receive the portion 2 on the bridge and the portion 8 of the tie plate or terminus of the guard 12, as the case may be.

In the form of my invention particularly illustrated in Figs. I, III, IV and VI, I have indicated the use of the heavy rim with widened portion 3 having engaging it on one side the bridge end 2 and on the other side the tie plate 8, while formed on each of the frame ends are the half lugs 6, together forming a substantially circular projecting lug adapted to be received in the central aperture 7 of the plate 8, which thus holds the lugs in united position and prevents separation thereof, the several parts being secured by fastening means, suc as screws 5, passing transversely of the tie plate 8,

frame 3 and preferably being threaded into the bridge end or terminus 2.

In Fig. II, I have shown a slightly different construction in which in place of the half round lug 6 I employ the pair of spaced lugs 13, the edges of the bridge end being so shaped as to just fit between the lugs in the manner of a joggle and thus with the lugs form a joggle-joint securely locking the ends of the frame together, the screws 01' fasteners 5 being employed to secure the plate in position.

Fig. V illustrates a slightly different form of construction in which a U-shaped clip is employed having an upper pair of ears 17 and a lower pair 16, the ears 17 being adapted to be secured to one end of the frame and the ears 16 to the other, while the plate connects the two ends of the frame along the edge thereof.

Fig. VII illustrates a form of the invention in which the tie plate 8 has integral therewith the arm of the guard 12, said arm looping rearwardly to dispose the guard below and in alinement with the foot of the bridge.

Figs. VIII and IX illustrate a slight modification in which a C type of bridge is employed extending directly forward from the plate 2, while the screws or fastening devices 5 engage the frame member without the use of the second or tie plate.

The form shown in F ig. X is quite similar to IX with the exception that an upper unthreaded lug 20 is used in place of a threaded fastener 5, while a cap plate having a lug 21 fitting in a recess common to both of the frame ends is formed on the plate 8 while the single fastener 5 at the bottom serves to tightly draw the two plates together to clamp the several parts in position. the guard 12 being also carried by the plate 8.

In Fig. XI in place of the half lug 6 each of the frame ends is shown as formed with a complete lug 19, the two lugs 19 projecting through the apertures in the bridge end 2, while fasteners 5 are threaded into the lugs and have their heads engaging the face of the lugs and of the plate 2 to substantially unite or join the several parts.

From the foregoing description taken in connection with the accompanying drawings, the construction of my improved ophthalmic mounting should be readily apparent and it will be seen that I have provided a simple, neat, inexpensive and durable construction which need comprise but few parts, that is to say, a center formed into both a bridge or connecting member a nose bearing member or guard and a tie or connecting plate for the ends of the frame, said bridge terminus being provided either with integral means for interlocking with the ends of the frame to unite the same, or being provided with apertures to receive fastening means for securing the two ends of the frame to it, the end of the bridge extending across the joint of the frame to connect and brace the parts at this point. It will further be noted that my invention has within its purview the employment of integral projections or the like on either the frame member or the fitting which shall be received in corresponding sockets in the other member for securely locking the ends of the frame against separating movement in addition to and independent of the securing action of the separate fastening devices.

I claim:

1. An ophthalmic mounting comprising a pair of frame members split to facilitate insertion of a lens therebetween, the slit in the said frame members being located at the inner or adjacent portions thereof, a bridge member having terminal portions extending parallel to the plane of the frames and spanning the joints at the split of the frames, and means connecting the two ends of each frame member with the adjacent portion of the bridge terminus, substantially as described.

2. In an ophthalmic mounting, the combination with a frame member split at the nose side thereof, of a bridging member having a portion spanning the split inthe frame member, and fasteners securing the bridge member to the frame member above and below the split therein.

3. In an ophthalmic mounting, the combination with a frame member having its joint at the portion nearest the nose, of a bridge member having a vertically extending portion spanning the joint and secured to the frame member above and below the joint to reinforce the same, said bridge member extending rearwardly and downwardly from its point of attachment to the frame, then upwardly behind the frame, the said rearwardly, downwardly and up wardly extending portions all being and having the widest portion of their material disposed in a plane substantially parallel to the side of the nose, and the upwardly extending portion terminating in a transversely extending bar with its greater Width vertically disposed, whereby the downwardly, rearwardly and upwardly extending portions form a broad and satisfactory guard, the transversely extending portions form a connecting member for the two lens frames, and the vertically extending ends form a connecting member for the two ends of the adjacent lens frames, substantially as illustrated.

4. In an ophthalmic mounting, the combination wit a split lens encircling rim, of a plate in the plane of the of the rim to the plate.

rim spanning the spht, and means for secunngeach end 1 5. In an ophthalmic mounting, the combination with a split rim, of a tie plate spanning the split in the rim, one of said parts having tenons, and the other of said arts having mortises to receive the tenons or connecting the parts.

6. In an ophthalmic mounting, the combination with a frame member split at one side to facilitate insertion or removal of a lens therefrom, said member having a fiattened or widened portion on each end adjacent the split joint, of a bridge having the terminal portion thereof extending along the flattened portions of the frame, and across the joints of the two ends, a tie plate disposed on the opposite side of the frame from the end of the bridge and also extending across the joint, and fasteners passing transversely through the tie plate, one end of the frame and bridge, there being at least one of these fasteners disposed on each side of the joint of the ends of the frame, whereby the tie plate and bridge end are securely united with the frame and serve to connect and brace the joint at the ends of the frame.

7. In a device of the character described, the combination with a frame having a split joint, of a fitting for the frame, the frame and fitting having interlocking parts for securing the ends of the frame at the joint in close engagement one with the other, and supplemental means for securing the fitting to the frame to prevent disengagement of the said interlocking parts, substantially as illustrated.

In testimony whereof I afiix my signature in the presence of two witnesses.

GEORGE H. DAY.

Witnesses:

H. K. PARSONS, JOSEPH J. DEMnRs. 

